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Патент USA US3096884

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July 9, 1963
1... c. WOOLDRIDGE
3,096,874
BELT SUPPORTING ROLLERS FOR ENDLESS BELT CONVEYORS
Filed Feb. 8, 1961
2 Sheets-Sheet 1
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July 9, 1963
|_. c. WOOLDRIDGE
3,096,874 I
BELT SUPPORTING ROLLERS FOR ENDLESS BELT‘ CONVEYORS
Filed Feb. 8, 1961
2 Sheets-Sheet 2
1
United States Patent 0 rice
3,096,874
Patented July 9, 1963
1
2
3,096,874
partly in section illustrating an embodiment of the inven
tion in which the trough section conveyor belt is required
to be supported by sets of idler rollers each. set of which
incorporates a central roller and a pair of oppositely dis
posed upwardly and outwardly inclined cantilevered idler
BELT SUPPORTING ROLLERS FOR ENDLESS
BELT CONVEYORS
Lawson Clarence Wooldridge, Stourbridge, England, as
signor to Brockway Engineering Co. Limited, Stour
bridge, England, a company of the United Kingdom of
Great Britain and Northern Ireland
wing rollers,
FIGURE 2 is a fragmentary view on an enlarged scale
Filed Feb. 8, 1961, Ser. No. 87,900
partly in section illustrating the manner of cantilevening
Claims priority, application Great Britain Jan. 6, 1961
the idler wing rollers illustrated in FIGURE 1,
6 Claims. (Cl. 198-192)
10
FIGURE 3 is a section taken on the planes indicated
This invention has reference to improvements relating
by the lines 3——3, FIGURE 2, looking in the direction
to belt supponting rollers for endless belt conveyors land
of the varrow to the said line,
is concerned particularly with improvements relating to
FIGURE 4 is ‘a fnagmentary view in perspective and
also on an enlarged scale illustrating in greater detail the
belt supporting rollers for belt ‘conveyors which are either
of a trough cross-section or else are required to assume 15 manner of cantilevering the wing rollers in the embodi
a trough cross-section when in use.
ment illustrated in FIGURES 1-3,
It is known practice to support the marginal portions
of the belt of an endless belt conveyor of trough cross
section on idler Wing rollers mounted on cantilevered
FIGURE 5 is a fragmentary view illustrating the man
net of forming the machined ?at surfaces at the outer
end portions of the spindles of the cantilevered wing roll
spindles. As practised heretofore however it has been 20 ers, and
necessary to provide supports for the ?xed ends of the
FIGURE 6 is a view partly in front elevation and partly
said cantilevered spindles in the form of cast or pressed
in section illustnating an embodiment of the invention
steel brackets.
in which the trough section conveyor belt is required to
Such brackets however are- -relatively expensive to pro
be supported by sets of idler rollers, each set of which
duce and require accurate machining in order to enable 25 incorporates ‘a central roller, upwardly and outwardly
the spindles to be cantilevered to beset at a predetermined
inclined intermediate rollers disposed on each side of the
angle.
said central roller and upwardly and outwardly inclined
The present invention has for its object to provide an
wing rollers which are cantilevered on the outer ends
improved method of manufacturing spindles ‘for support
of the spindles of the intermediate rollers ‘and the outer
ing rollers for endless belt conveyors which are required 30 supports therefor. In the drawings like numerals of refer
to be cantilevered which is relatively low in cost vand
ence indicate similar or analogous parts in the several
which is readily ‘adaptable to provide any predetermined
tangle of inclination required to be possessed ‘by a spindle
views.
According to the embodiment of the invention as illus
when cantilevered.
tnated in FIGURES 1 to 5, the trough section belt con
Accordingly the invention consists of an improved 35 veyor 10 is supported on sets of idler rollers comprising
method of manufacturing spindles for supporting rollers
a central idler roller 11 and a pair of upwardly and out
for endless belt conveyors which are required to be canti
wardly inclined wing idler rollers 12, the said central
and idler rollers 11, 12 Iare adapted to be supported from
levered which resides in forming the anchorage end por
tion of each spindle with a machined flat surface and
providing the end portion of each spindle for a belt sup
porting roller which is not required to be cantilevered but
a transverse metal base member 13 of inverted V cross
‘section through the medium of pairs of uprights 14 of
metal plate which are welded at their lower ends to the
which is required to be associated with a cantilevered
respective inclined surfaces of the base member 13 said
spindle with a complementary machined flat surface and
pairs of uprights 14 being spaced apart ‘at a distance
bounding the machined ?at surface on the spindle to be
slightly greater than the length of the central roller 11.
45
cantilevered by a shoulder resulting from the machining
Each projecting end portion of the ?xed spindle 111
which is adapted to bear on the periphery of the said
for the central roller 11 is provided with a machined
complementary spindle when ?tted thereto with the ma
flat surface 112 which is disposed in a vertical plane when
chined ?at surfaces in abutment and the spindle under
the said spindle 11 is mounted in a manner to be referred
load whereby after the bringing of the machined ?at
to ‘hereinafter.
surfaces into abutment as aforesaid land the passage of a 50
The spindles 121 for the idler wing rollers 12 which are
locating member through the abutting portions a canti
to be located on either side of the central roller 11 are
levered action is engendered in the spindle which is re
each provided at their inner ends with a machined flat
quired to be cantilevered, when this is under load, said
surface 122 which is complementary to the machined
shoulder being machined at an angle corresponding to a
flat surface 112 at the ends of the central spindle 111.
predetermined angle of inclination required to be given
The machined flat surfaces 112 of the central spindle
to the cantilevered spindle.
1-11 and the machined ?at surfaces 122 of the spindles 121
The invention ‘also resides in a method of manufactur
are provided with holes 113 and 123 respectively which
ting ‘spindles for supporting rollers for endless ‘belt con—
are adapted to be brought into register with holes 141
veyors which are required to be cantilevered substantially
formed in the upper end portions of the relevant pairs
60
as will ‘be ‘described hereinafter.
The invention still further resides in endless belt icon
of uprights 14 so that locating pins 15 common to the
central and wing roller spindles 111 and 121 may be
veyors whenever incorporating cantilevered supporting
passed therethrough.
rollers substantially as will ‘be described hereinafter.
Embodiments of the invention will now be described
with particular reference rto the accompanying draw
machined so as to provide shoulders 124 which when a
The flat surfaces 122 on the wing roller spindles 12‘ are
ings which illustrate the invention as applied to endless ‘
locating pin 15 has been passed through the holes 141 in
the uprights and through the holes 113‘ and 123 in the
belt conveyors employing trough section belts which are
required to be supported by ‘a plurality of sets of idler
rollers.
wing roller spindles 111 and 121, the ?at surfaces 112
In the drawings:
FIGURE 1 is a view mainly in front elevation but
machined ?at surfaces 112 and 122 of the centbal and
and ‘122 are in abutment with the shoulder 124, bound
ing the machined ?at surface 122 on each wing roller
spindle i121 bearing on the periphery of the relevant end
3,096,874
3
portion of the central spindle 111 see FIGURES 2 and 4,
thus engendering the desired cantilevered action of the
spindles 121 for the wing rollers 12 when the said Wing
by the wing idler rollers are cantilevered from the spindle
rollers 12 are under load.
les belt conveyor having an intermediate idler roller or
The machining of the flat surface 122‘ of the spindles 12
to be cantilevered is effected so that the angle of the
shoulders 124 is such that when the said shoulders 124
rest on the relevant end portions of the spindle 111 of the
central roller 11 the wing roller spindles 121 are set at
of an intermediate idler roller. \
2. Idler roller sets for supporting the belt of an end
rollers for supporting the central portion of the belt of
the conveyor and wing idler rollers for supporting the
marginal portions of the belt of the conveyor incorporat
ing ?xed spindles for the intermediate and wing’ idler
rollers, a base member, uprights ?xed to said base mem
the required angle of inclination relatively to the central 10 ber for supporting the ends of the spindle of an interme
diate idler roller, a ?at surface located in a vertical plane
spindle 11'1.
_
at each end portion of the spindle of an intermediate
In the embodiment of the invention illustrated in FIG
idler roller which is adjacent to a wing idler roller, a ?at
URE 6, the trough section endless belt 10 is supported on
surface located in a vertical plane at the inner end por
sets of ?ve idler rollers each set of \which incorporates a
central roller 11, two upwardly and outwardly inclined 15 tion of the spindle of a Wing idler roller which is pre
sented to the ?at surface of the spindle of an intermediate
intermediate rollers ‘16 and two wing idler rollers 12 also
idler roller and a shoulder normal to the ?at surface
upwardly and outwardly inclined, the base member 13
on the spindle of a 1wing idler roller which is formed at a
is provided With four pairs of uprights 14 constructed and
predetermined angle of inclination relatively to the axis
mounted as in the embodiment ?rst described with a pair
of the spindle of the said wing idler roller and a member
of such uprights 14 situated at the connection point of the
spindles of adjacent pairs of rollers.
passing through the ?at end portions of the spindles of
The spindles 111 and 161 ‘of the centre and interme
diate rollers 11 and 16 are each supported at both ends
between the said four pairs of uprights 14 by locating pins
an intermediate idler roller and its complementary ad
Thus in the embodiment last described the Wing idler
angle at which the spindle of a wing idler roller is canti
levered.
jacent wing idler roller and through the supporting means
for the spindle of the relevant intermediate roller after
15 passed through holes in the uprights 14 and through 25 the ?at surfaces aforesaid of the respective spindles have
been brought into abutment and with the shoulder on the
holes in the spindles 1511 and 161 adjacent to the ends
wing idler roller resting on the periphery of the presented
thereof, said spindles 1.11 and 1611 being provided with
end portion of the spindle of an intermediate idler roller
complementary machined ?ats Whilst the spindles 121
whereby the Wing idler rollers are cantilevered by direct
of the Wing rollers .12 are provided with shouldered
engagement With the spindle of an intermediate idler
machined surfaces 122 bounded by shoulders 124‘ as in the
roller,
the angle of the shoulder aforesaid determining the
embodiment ?rst described.
rollers 12 are cantilevered from the outer pairs of up
rights 14 and the outer ends of the spindles 161 for the
intermediate rollers 116 in a manner analogous to that
hereiubefore described.
In each of the embodiments described the several rollers
11, 12 and 16-916 mounted on their respective spindles
111, 12,1 and 161 through the medium of ball bearing
mountings 17 in accordance with conventional practice 40
3. Idler roller sets for supporting the belt of an end
less belt conveyor having an intermediate idler roller
or rollers for supporting ‘the central portion of the belt
of the conveyor and wing idler rollers for supporting the
marginal portions of the belt of the conveyor incorporat
ing ?xed spindles for the intermediate idler and wing
idler rollers, a base member, uprights for the ends of
the spindle of an intermediate idler roller secured to the
said base member, a ?at surface located in a vertical
[plane at each end portion of the spindle of an intermediate
idler roller which is required to be adjacent to a wing
conveyors which are required to be cantilevered as de
scribed hereinbefore is simple, effective and low in pro 45 idler roller, a ?at surface located in a vertical plane at the
inner end portion of the spindle of a wing idler roller
duction cost and enables such spindles to be produced
which
is presented to ‘the ?at surface of the spindle of
which can he set at the desired angle of inclination.
an intermediate idler roller and a shoulder normal to the
I claim:
flat surface of the spindle of a wing idler roller which is
1. Idler roller sets for supporting the belt of an end
formed at a predetermined angle of inclination relatively
50
less belt conveyor having an intermediate idler roller for
to the axis of the spindle of the said wing idler roller and
supporting the central portion of the belt of the con
a member passing through the ?at end portions of the
veyor and wing idler rollers for supporting the marginal
spindles of an intermediate idler roller and its comple
portions of the belt of the conveyor, incorporating ?xed
mentary adjacent wing idler roller and through the sup
spindles for the intermediate and wing idler rollers, means
means for the spindle of the relevant intermediate
for supporting the ends of the spindle of an intermediate 55 porting
roller after the flat surfaces aforesaid of the respective
idler roller from a base, the spindle of an intermediate
spindles have been brought into abutment and with the
idler roller projecting outwardly from the roller and
shoulder on the wing roller resting on the periphery of the
having a ?at surface located in a vertical plane at each
presented end portion of the spindle of an intermediate
end portion thereof, a flat surface located in a vertical
idler roller whereby the wing idler rollers are cantilevered
60
plane at the inner end portion of the spindle of a wing
by direct engagement with the spindle of an intermediate
idler roller which is presented to the ?at surface of the
idler roller the angle of the shoulder aforesaid determin
spindle of ‘an intermediate idler roller and a shoulder
ing the angle at which the spindle of a wing idler roller
normal to the flat surface on the spindle of a wing idler
is cantilevered.
roller which is formed at a predetermined angle of in
4. Idler roller sets ‘for supporting the belt of an endless
clination relatively to the axis of the spindle of the said
conveyor having a central idler roller for supporting the
wing idler roller and a member passing through the ?at
central portion of the belt of the conveyor and wing idler
end portions of the spindles of an intermediate idler
rollers for supporting the marginal portions of the belt of
roller and its complementary adjacent wing idler roller
the conveyor, incorporating a ?xed spindle ‘for the central
and through the supporting means for the spindle of the
idler roller and a ?xed spindle for each wing idler roller,
relevant intermediate idler roller after the ?at surfaces
means for supporting the ends of the spindle of the cen
and as is clearly seen in FIGURES 1 and 6.
It will be appreciated that the method of manufacturing
spindles for the supporting idler rollers ‘of endless belt
aforesaid of the respective spindles have been brought
tral idler roller from a base, a ?at surface located in a
into abutment and with the shoulder on the wing idler
roller resting on the periphery ‘of the presented end por
tion of the spindle of an intermediate idler roller Where
central idle-r roller, a flat surface located in a vertical
vertical plane at each end portion of the spindle of the
plane at the inner end portion of each spindle of a wing
3,096,874:
5
idler roller and a shoulder normal to the ?at surface of
the spindle of each wing idler roller which is formed at
a predetermined angle ‘of inclination relatively to the axis
of the wing idler roller and a member passing through
the ?at end portions of the spindle of the central idler
roller and the complementary ?at end portions of the
spindles of the adjacent wing idler roller and through the
supporting means for the respective end of the spindle of
6
to the flat surface of the spindle of an intermediate idler
roller ‘and a shoulder normal to the flat surface of the
spindle of \a wing idler roller which is formed at a prede
termined angle of inclination relatively to the axis of the
spindle of the said wing idler roller and a member passing
through the ?at end portions of the spindles of an inter
mediate idler roller and its complementary adjacent Wing
idler roller and through the supporting means for the
the central idler roller latter the ?at surfaces of the re
spindle of the relevant intermediate idler roller after the
spective wing idler roller and {if the presented end of the 10 hat surfaces aforesaid of the respective spindles have
spindle of the central idler roller have been hrought into
been brought into abutment and with the shoulder on
abutment and with the shoulder of a wing roller resting
the Wing idler roller resting on the periphery of the
on the periphery of the presented end portion of the
presented end portion of the spindle of an intermediate
spindle of the central idler roller whereby the wing idler
idler roller whereby the wing idler rollers are directly
rollers are ‘directly cantilevered ‘from the spindle of the
cantilevered from the spindle of the adjacent intermediate
central idler roller, the angle of the shoulder aforesaid
idler roller, the angle of the shoulder aforesaid determin
determining the angle at which the spindles of the wing
ing the angle at which the spindle ‘of a Wing idler roller is
rollers are cantilevered from the spindle of the central
cantilevered.
roller.
6. A roller set for ‘a trough ‘conveyor belt, comprising
5. Idler roller sets for supporting the belt of an end
an intermediate roller ‘and Wing rollers, a stationary
less ‘belt conveyor having a plurality of intermediate idler
spindle for the intermediate roller supported at both ends
rollers ‘for supporting the central portion of the belt of
in horizontal position and ‘cut out at both ends to present
the conveyor and Wing idler rollers tor supporting the
vertical ?at side faces and adjacent shoulders, and a wing
marginal portions of the belt of the conveyor incorporat
spindle reduced at one end to present a vertical ?at side
ing ?xed spindles for the intermediate and ‘wing idler 25 face and an overhanging shoulder inclined with respect
rollers, supports for the ends of the spindle of each in
to the axis of the spindle, the said spindles ‘being pivotally
termediate idler roller, a ?at surface located in a vertical
connected with their ?at faces in ?aceato-face contact,
plane at each end portion of the spindle of an intermedi
and the inclined shoulder of the wing spindle engaged
ate idler roller which is presented to the end portion of
with the shoulder of the intermediate roller spindle.
the spindle of an adjacent intermediate idler roller, mem
bers passing through the flat end portions of the spindles
ReferencesrCited in the ?le of this patent
of the intermediate rollers and through the relevant sup
UNITED STATES PATENTS
ports therefor when the said ?at surfaces have been
brought into abutment, a flat surface located in a vertical
plane at each end portion of the spindle of an intermedi
ate roller which is adjacent to a wing idler roller, a flat
surface located in a vertical plane at the inner end portion
169,826
1,788,102
Melhorn ______________ __ Nov. 9, 1875
Gilbert ________________ __ Jan. 6, 1931
of the spindle of a Wing idler roller which is presented
5,586
Great Britain __________ __ Mar. 8, 1906
FOREIGN PATENTS
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